Since “Boo” is a human girl, her costume is ridiculously easy to pull off with just the right amount of touches applied. As you can see, this little girl is a spot on impersonation of the adorable and cute little Boo from the Monsters Inc movie. What sets the flags off are just a few things that you need to make sure you hit so you can score an original costume yourself. First of all, let’s start with the color. Boo always wears the same pink onesie PJ throughout the movie. Second, Boo’s hair is tied into too little pigtails. And finally, Boo at one point plays with this now famous one eyed teddy bear doll that we see is Mike Wazowski’s toy he played with when he was young according to the new film Monsters University. Monsters Inc. costumes will definitely be in full swing this 2013 Halloween season so why not get in the fun with this easy to make Boo costume too? Even though she doesn’t appear in the Monsters University movie, that doesn’t mean you can’t win some hearts over still with her cuteness. Plus, there’s still the tie in with the one eyed teddy bear toy doll of Mike’s.